Machine for grinding and polishing.



PATENTED APR. 7, 1908.

L. A. JONES. MACHINE FOR GRINDINGv AND VPOLISHING.

APPLICATION FILED 00T. 1. 1907.

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No. 884,162. y P'ATENTED APR. 7', 190s.-

vL. A. JONES.

MACHINE POR GRINDING AND POLISHING.

APPLIUATION FILED 00T. l., 1907.

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No. 834,162. PATNNTNDAPN. 7,' 1908@V L. A'. JONES.

\ MACHINE NoN GRINDING AND PoLIsNING.

APPLICATION FILED 00T. 1I 1907.

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, UNITED STATES PANT OFFICE LAWRENCE A. JONES, OF GLYDE, OHIO.

MACHINE FOR GRINDING AND PLISHING.

To all whom it may concern:

Be it known that I, LAWRENCE A. JoNEs, a citizen of the United States,and a resident of Clyde, in the county of Sandusky and State of Ohio,have invented certain new and useful Improvements in Machines forGrinding and Polishing, of which the following is a specification.

My invention is an improvement in machines for grinding and polishingand is especially adapted for grinding and polishing knives, being inthe nature of a cutlery grinder; and the invention consists in certainnovel constructions and combinations of parts as will be hereinafterdescribed and claimed.

In the drawings Figure 1 is an end view of the machine. Fig. 2 is afront elevation thereof, the main lever being in the position to whichit is moved for beginning the grinding operation. Fig. 3 is a top planview of the machine, parts being broken away with the parts in theposition they assume at the conc usion of the cutting operation or whenthe holder is in position for the reception or removal of the blade.Fig. 4 is a top plan view of the machine with the parts in the positionshown in Fig. 2. Fig. 5 is a detail view of the connecting or locklever, and Fig. 6 is a detail perspective view showing the work holderand including the carrier plate thereof.

In carrying out my invention I employ a machine base A on which aremounted rails B extending from front to rear and receiving the carriageB which may be adjusted on its rails B toward and from the grinding orpolishing device C by means of the screw B2, this permitting theadjustment of the work holding devices toward and from the grinding andpolishing devices, as may be desired in the operation of the invention.This main carriage B is provided with transverse ways D for atransversely movable carriage D and infront of said carriage D the maincarriage is provided with an upwardly projecting portion B3 which isprovided with a transversely extending way or track E for a laterallymovable front frame E which may be secured in any lateral adjustment inits way E by screws E2. This frame E exten ds about one-half the widthof the machine and to the right of said frame E the front portion B2 ofthe main support B is grooved in its upper side at B4 receiving thetripping device G and the adjustable stop G10, said parts G and G10being secured in any suitable adjust- Specification of Letters Patent.

Application filed October l, 1907.

Patented April '7, 1908.

Serial No. 395,324.

ment by means of screws G11 operating against the pressure plate for thetrip G12 as will be understood from Figs. 3 and 4 of the drawings. Thefront frame E supports adjustably a stop block F adjustable in a grooveF, and having a screw by which it may be held in any desired adjustment.The groove B1 is formed as before described in the main support for theparts G and G10. The tripping device G-is adjustably held as beforedescribed so it can be moved laterally, the said tripping device G beingspaced apart from the stop F and provided with a rod or extension Gprojecting toward the said stop F in position to engage the connectingor lock lever at the conclusion of the operating movement of the workholder, as more fully described hereinafter. The stop G is also providedwith the rearwardly projecting arm G2 to engage and release the latchdevice presently described. The carriage B supports the front frame E ina plane slightly above the upper surface of the carriage D, as shown inFig. 1.

The carriage D may be moved in its supports transversely from side toside in front of the grinding and polishing device C by means of themain lever H, pivoted at H to lugs B10 depending from the main sup ort Band extending thence upwardly an connected by a link H2 with a workholding carriage D, so the lever H may be moved between the positionsshown in Figs. 3 and 4 to slide the work holding carriage D laterally,as desired in the operation of the invention. The work holding carriageD is provided on its upper face with a shoulder or projection D2 whichabuts the stop G10 when the parts are in the position shown in Fig. 3and limits the movement of the carriage to the right as will beunderstood from said Fig. 3 of the drawings. The work holding devicesare mounted on the carriage D and comprise a carrier plate I pivoted atI near one end of the carriage D so the rear edge of the carrier plate Imay be swung toward and from the grinding and polishing devices C, theswinging end of the plate I being provided with a slot I2 and a bolt I3operating therein to limit the movement of the plate I, and a spring I1connecting the swinging end of the p ate I with its carriage D andoperating to readjust the plate I to the position shown in Fig. 3 fromthat shown in Fig. 4 at the end of the operating stroke of the machine.The work holding devices proper are mounted on the carrier plate I andmay be of the construction shown or of any other suitable construction.As shown, the work holder comprises a bar J to receive the knife bladesand carried by the levers Jl pivoted at J2 on lugs mounted on the plateI and having adjusting screws J 3 by which the bar J may be raised orlowered. In connecting the blades with the bar J the latter may have apin or stud J4, to enter one of the rivet holes in the tang of the bladeand the edge of the blade may be rested against a stop J5, and theadjusting devices J3 permit the holder to be moved up and down from theposition opposite the center of the wheel C.

A connecting or lock lever K is pivoted at .one end K to the carrierplate I and extends :1 forward over the carriage D and the framing,

being rovided between its ends with a roller K2 to ear against the rearedge of the top frame E and extends thence over the said frame E betweenthe stop F and the proj ecf' tion G on the trippin c evice G and is promoved from the holder J.

lever II from the position shown vided at its front en( with a knob K3by which it may be operated by hand. This lock lever K abuts the stop Fon the main frame and also abuts a stop I5 on the slide plate of thework holder when the parts are in the position shown in Fig. 4, the stopI5 on the plate I preventing any movement of the front end of the leverK toward the right from the position shown in Fig. 4 so that the strainexerted upon the lever K toward the right will operate to move saidlever and also move the slide plate with the carriage D toward theright. In effecting such movement of the lever K, I provide a latch L,pivoted at L on the carriage D and shouldered at L2 to engage with thelever K, the shoulder L2 being at one end of the latch L and the otherend of the latch L being Dressed upwardly by a spring L3, and adapted atL4 to ride under 1 the arm G2 of the tripping device in order to releasethe latch at L2 from engagement with the lever K when the carriage Dreaches the position shown in Fig. 3, in order that the lever K may atsuch time be readjusted to the position shown in Fig. 3 by the movementof the carrier plate I to the position shown in Fig. 3 by the action ofits spring I4. In effecting this operation, the projection G of thetripping device G is useful in engaging same off its dead center,resulting from the location of the pivotJ K/ and the roller K2.

- When the parts are in the position shown in Fig. 3 the blade may beapplied to or re- If now, the main lever be thrown to the position shownin Fig. 2, it will bring the parts to the position shown in Fig. 4, whenthe grinding or polishingf moving the l movement may be carried out by vin Fig. 2 to the right or to the position shown in Fig. 3. When theparts assume the position shown in Fig. 4, the latch L will engage withthe lever K and form a positive connection for holding the plate I inthe position shown in said Fig. 4, and in fixed relation to the carriageD. If, now, the carriage D be moved to the right by the operation of thelever I-I, the carrier plate I and the holder will be correspondinglymoved and the blade will be moved across the grinding or polishingdevice C until it has reached the end of its stroke. At the end of themovement of the carriage D tothe right, the tripping device G by its armG2 will operate upon the end of the latch L and release such latch fromengagement with the lock lever K after which the projection G of thetripping device will engage the lever K and tilt the same off its deadcenter so the plate I and the lever K may be forced to the positionshown in Fig. 3 by the tension of the spring I4. It will be noticed thatthe front frame E forms at E10 a track upon which the wheel on theconnecting or lock lever operates in the movement of said lever betweenthe positions shown in Figs. 3 and 4. ticed that I support the workholding devices on the carrier plate, which is pivotally mounted on thework holding carriage and is spring actuated in one direction away fromthe grinding and polishing devices and is moved toward said devices bythe connecting or lock lever having a movable bearing against arelatively fixed track and is pivotally connected with the carrier platewhereby it may adjust the carrier plate toward and from the grinding orpolishing devices in the operation of the invention.

I claim- 1. The combination in an apparatus sub stantially as describedof a carriage, a carrier j plate pivotally mounted thereon, a spring foractuating said plate in one direction, means whereby the carriage may bemoved, a lock lever pivoted to the carrier plate, and

a relatively fixed track facing the carrier plate and forming a bearingfor the lever, substantially as set forth.

2. The combination with a carriage, of a carrier plate movable with thecarriage and having a swinging movement independent thereof, a locklever pivoted to the carrier plate, and means on the carriage forholding the lock lever in fixed relation to the carrier plate in certainpositions of the parts, substantially as set forth.

3. The combination of a carriage and supports therefor, a work holderhaving a carrier plate pivotally mounted on the carriage and movabletherewith and having a swinging movement independent of the carriage, aconnecting or lock lever pivoted to the carrier plate and extending overthe carriage, a track facing toward the carriage and forming a bearingfor said lever, a stop on the carrier plate for engagement by the lever,a latch mounted on the carriage and engaging with iso the lever wherebyto hold the latter against the carrier stop, means for moving thecarriage, vand devices for releasing the latch, substantially as setforth.

4. The combination in a machine .for grinding or polishing, of acarriage, a work holder comprising a plate pivotally mounted on thecarriage, a spring for actuating the carrier plate in one direction, aconnecting or lock lever pivoted at one end to the carrier plate, arelatively fixed track with which said lever is movably engaged, arelatively fixed stop for engagement by said lever as the carriage ismoved, means for moving the carriage, and latch devices between thecarriage and the lever and engaging with the lever, substantially as setforth.

5. The combination with the carriage, a support on which the carriage ismovable laterally, a carrier plate movable laterally with the carriageand also having a swinging movement independent of the carriage, a locklever pivoted to the carrier plate and extending forwardly therefrom, atrack on the support and facing toward the carrier plate, and a rolleron the lock lever and bearing against said track, substantially as setforth.

6. The combination of a carriage, a carrier plate pivoted to thecarriage and swinging thereon, a lock lever pivoted to the carrier plateand extending forwardly therefrom and having a roller and an extensionin advance thereof, a support for the carriage having in advance of thecarrier plate a track forming a bearing for the roller of the locklever, a stop on the carrier plate for engagement by the lock lever, anda latch on the carriage for holding the lock lever in engagement withsaid stop.

7. The combination of a work holder having a carrier plate, a carriage,a pivotal connection between the carriage and the carrier plate, aspring connecting the carrier plate with the carriage, a lock leverpivoted at one end to the carrier plate, and provided between its endswith a roller and with an extension in advance of said roller, arelatively fixed stop for engagement by said extension, a track forminga bearing for the roller, a latch mounted on the carriage and movableinto, and out of engagement with the lock lever, means for adjusting thelatch out of engagement with the lever, and means for moving thecarriage.

8. The combination of the carriage, a carrier plate mounted on thecarriage and movable therewith and having a movement independent of saidcarriage, a lock lever pivoted4 to the carrier plate and having inadvance thereof a roller, a stop projection on the carrier plate forengagement by said lock lever, a latch on the carriage for holding thelock lever in engagement with said stop, a track fixed relative to thecarriage and forming a bearing for the roller of the lock lever, andmeans supported independently the carriage for releasing the latch fromengagement with the lock lever, substantially as set forth.

9. The combination of the sliding carriage, a work holder having acarrier plate pivoted at one end to the carriage and swinging at itsother end upon the carriage, a spring for readjusting the carrier plate,a lever pivoted to the carrier plate, a track forming a bearing for saidlever, a latch forming a detachable connection between the lever and thecarriage and movable into and out of engagement with the lever, atripping device for releasing the latch from engagement with the lever,and means for operating the carriage, substantially as set forth.

110.` The combination with the carriage and work holder having a carrierplate movable with and independent of the carriage, of a lock leverconnected with the carrier plate, latch devices between the lever andthe carriage, and means fixed relatively to the carriage whereby toshift the lock lever off dead center, substantially as set forth.

11. The combination with the carriage and work holder having a carrierplate pivotally mounted on the carriage, a spring for actuating thecarrier in one direction, a lock lever pivoted to the carrier plate, astop on the carrier plate for limiting the movement of the lever in onedirection, a latch on the carriage and forming a detachable connectionbetween the same and the lever, and a tripping device supportedindependent of the carriage for releasing the latch from engagement withthe lever, substantially as set forth.

12. The combination of the carriage, a carrier plate pivoted thereto, alock lever pivoted at one end to the carrier plate, a stop on thecarrier plate for engagement by the lock lever, a stop supportedindependent of the carriage and carrier plate and engaging the oppositesides of the lock lever from the stop on the carrier plate, a trackforming a bearing for the lock lever, means for operating the carriage,and interlocking devices between the carriage and the lock lever,substantially as set forth.

13. The combination of the carriage, a work holder having a carrierplate and movable with and independent of the carriage, a lock leverpivoted to the carrier plate, a stop on the carrier plate and engagingone side of the lock lever, a stop engaging the opposite side of thelock lever, .means for securing said stop in any desired adjustment,means for moving` the carriage and interlocking device between thecarriage and the lock lever, substantially as set forth.

14. The combination with the carriage and a work holder having a carrierplate movable with and independent of the carriage, a lock lever pivotedto the carrier plate and extending over the carriage, a latch supportedon the carriage and movable into and out of ing a carrier plate, a barto receive the Work, engagement with the lock lever, and a trip andlever arms connected With said bar and device supported independentofthe carriage pivotally mounted on the carrier plate and and adapted torelease the latch from engageadjusting devices operating in connectionment with the lock lever, and means for se- With said lever arms,substantially as set 15 curing the tripping device in any desiredadforth.

j ustment, suhstantiall)T as set forth. f LAWRENCE A. JONES.

l5. The combination with the carriage, Witnesses: and means for movingthe same,4 of a Work ROBERT B. JONES,

19 holder mounted on the carriage and comprisl DEAN C. RICHMOND

